Hex #499b18 or rgb(73,155,24) in RGB space is the tint of grass green. It has hue angle of 97.56 degrees, value = 61 and saturation = 85. #499b18 can be obtained by mixing 4 colors: 2 drops of yellow, 1 drop of blue, 3 drops of green, 1 drop of black.
Nearest safe hex - #339900. Below you can see the block with #499b18 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #499b18 to the mixer and play with it.